Jack



March 24, 1925. 1,530,640

E. BATCHELDER JACK Filed March 19 1924 Edmund aohelder Patented Mar.l24, 1925(3 ED STATES PATENT OFlTlCE.

Emuunn samenwer, on NEW "roux, n. Y.

i Jack.

Application med aroh 19, 1924. Serial No. 700,300.

improvements in jacks which are more par-v ticularly adapted for use inconnection with telephone or telegraph systems and also in thetransmission of messages by radio.

further object of the invention is to provide a jack of the abovementioned character which is of such a construction as to enable thesame to be readily placed in use, the parts being so arranged as toenable the ready disassembling of the same whenever necessary.

A still further object of the invention is to provide a jack of theabove mentioned character, wherein an important feature resides ineecting a, verysmall capacity between the several sections comprising myjack which is very essential when in use in connection with radiocircuits.

Another important object is to provide a jack of the above mentionedcharacter wherein the contacts associated therewith are not subjected toany foreign substance such as dam-pness, dust, or the like, when thejack is in use, thus 'rendering the same very efficient in itsoperation.

further object is to' provide a jack of the above mentioned character,which is of such a construction as to enable the same to be used in asingle circuit either open or closed, a double closed circuit or afilament control circuit. p

A. still further object is to provide 'a jack `which is simple inconstruction, inexpensive', strong and durable, and further Well adaptedfor the lpurposes for which it is designatec.

@ther objects and advantages of this invention will become apparentduring 'p the course of the following description.

in the accompanying drawin forming a part of this specification, and inWhloh like numerals designa-te like parts throughout :ne saine,- LFigure l a side elevation of my improved jack showing the sainesupported on a panel board. Fkigure 2 is a front end elevation of the lml Figure 3 is a sectional view taken on line 3 3 of Fig. 1.

Figure e. is a similar view taken on line 4-4 of F ig. l.

Figure 5 is a sectional View taken on line 5 5 of Fig. 2. Y

Figure 6 is a sectional view taken on 'line A6 6 of Fig. 2, and

Figure 7 is a detail View` of the fastening element.

In the drawing wherein for the purpose of illustration is shown thepreferred embodiment of my invention, the numeral 1 designates myimproved `iack and comprises the inner and outer sections 2 and 3respectiif'elynund the intermediate sect-ion 4. These sections laresubstantially circular in cross section and are formed of any suitablenon-conducting material such as hard rubber, fibre, or the like, and ldo not wish to limit myself to the particular material used.

For the purpose of holding the sections together in alignment, Ipro-vide the fastening bolts 5, 6 and 7, respectively. which extendthrough the sections in the manner as shown in Figs. 5 and 6 of thedra-wing, the heads of the bolts being adapted to be received insuitable depressions 8 formed in the outer faceof the `inner section 2.The opposite ends of these bolts extend through the outer face of theouter section 3 and are threaded for thel purpose of receiving Vthe nuts9, whereby connection may be made in the usual manner for connecting thedevice with which the jack is associated for the purposes well known inthe art. The fastening bolts are also adapted to provide binding postsin connection with the contacts which will hereinafter be more fullydescribed.

Extending through the inner section 2 at a point diametrically oppositethe fasteningl bolt 6, is a similar fastening bolt 10. The latter isadapted to be threaded into a suitable threaded apertureprovided in theintermediate' section 4 -which extends from the inner face of theintermediate section 4 to a point adjacent the outer face thereof.Extending through the outer section 3 at a point diametrically oppositethe fastening bolt 6 and in vertical alignment with the fastening bolt10, is the binding post 11. The head of the latter is receivablein e.suitable cavity formed in the outer face of the intermediate section sand the threaded end thereof extends beyond the outer face of the outersection 3 in the manner similar to the other fastening bolts 5, 6 and 7respectively, and carries thereonthe nuts 12 similar to the nuts 9 onthe last mentioned fastening bolts. rllhe binding post 11 will beslightly spaced from the fastening bolt 10 in the manner as shown moreclearly in Fig. 5 of the drawing, so as not to be 1n contact therewith.

Each of the sections are provided with central registering openings andas is more clearly illustrated in Figs. 5 and 6 of the drawing, theopening 13 provided in the central or intermediate section 4 extendscompletely therethrough whereas the central openin provided in the outersection 3 is in the orm of a cavity as shown at 14. The central opening15 formed in the inner section 2 is slightly larger than theaforementioned openings and is also threaded for the purpose ofreceiving the threaded end of the thimble 16. The latter is providedwith the enlarged head 17 whereby the jack may be held in properposition on the panel board A by having the head 17 of the thimble 16engaging the outer tace of the panel board while the outer face of theinner sect-ion 2 of the jack is held in engagement with the inner faceof the panel board in the manner as clearly shown in Fig. 1 `of thedrawing..

Formed i-n the inner face of the inner section 2 is the enlarged recess18 which forms a pocket for receiving the spring conta-ct 19, the latterbeing Jformed preferably of wire. The spring Contact 19 has the'headthereof in engagement with the binding post 5 and is adapted to be heldin position with respect thereto by means .of thethreaded clamp 2O whichis receiable in a suitable recess 21 providedqin the adjacent tace ofthe intermediate section 4, in the manner as clearly shown in Fig. 6 ofthe drawing. The Contact 19 has its arms l22 and 23 respectivelyextendingacross the enlarged recess 18 so that the opposite ends or theouter free ends of the arms will be in engagement with the diametricallyopposite binding post 7 as is clearly illustrated in Fig. 3 ot thedrawing. It'is to be understood that the intermediate portions of thearms 22 and 23 will extend across the central registering openingsformed in the inner section 2 and the intermediate or central setion 4.for the purpose hereinafter to be more Jfully described.

A similar spring contact 24 is adapted to be interposed between theouter section and the intermediate section 4 and is receivable in asuitable enlarged recess 25 formed on the inner face of the outersection 3, whereby a pocket for the spring contact is provided. The headportion of the spring contact 24 is held in engagement with the bindingpost -11 by means ot the headed end thereof and the. arms 26 and 27respecincasso tively extend across the enlarged recess and .the freeends thereof are in engagement with the oppositely disposed binding post6, as more 'clearly shown in Fig. 4 of the drawing. lt is to be alsounderstood that the intermediate portions ofthe arms 26 and 27 of -thespring contact 24 will extendacross the central opening ormed in theintermediate section 4 and also the opening .formed by the cavity 314provided on the inner face of the outer section 3. Itis to be alsounderstood that for convenience inspacing the binding posts the springcontact 24 which is interposed between the intermediate section 4 andthe outer section 3 may extend at substantially 'right angles to thespring conf tact 19 which is interposed between the inner section 2 andtheintermediate section 4.

With the parts arranged as shown in the drawings, it will be readilyunderstood that normally the pair of binding posts -5 and 7 areconnected together by the spring contact 19, and the pair of binding'posts -6 and 11 by the springfcontact 24. Now when a plug ofconventional construction is fully inserted in the jack, the arms 22 and23 ot' the spring contact 19 will be spreadapart and will make contactwith one terminal of the pliug, thereby breaking contact between thepair of binding posts 5 and 7 while the arms 26 and 27 of the springcontact 24 will also be spread and make Contact with the other terminalof the plug. thereby likewise breaking contact between thebinding-'posts 6 and 11. This arrangement permits of use of the j ack ina variety of ways and in ditferent kinds of circuits. For example. asingle open circuit may be formed by securing the connecting wires ofadevice with which the jack is intended to be used tothe binding posts5-and 11, or a second device may he placed in circuit by fastening theconnecting wires thereoi2 to the binding posts 6 and' 7. or otherwise.ln the particular case where one device is connected to the bindingpostsl 5 and 1.1,and another` device to the binding posts 6 and 7, itwill be understood that-insertion of the plug in the jack will close thecircuit of the device connected `to the bindingposts 5 and 11 and willopen the circuit between the two devices.

lt will thus be seen from the foregoing description, that a jackespecially adapted for use in radio, although it is to be understoodthat the same may be used in connection with telephone and telegraphsystems, has been provided wherein the same comprises a series ofsections with the spring contacts interposed therebetween in such amanner as to insure the same against dampness, dust, and any otherforeign substance which would cause injury thereto and prevent theproper operation of the device in making t e necessary contacts tocomplete las the desired circuits, Further by lproviding a sectionaljack of the above mentioned character, the same may bereadilydisassembled whenever necessary in order to replace or have .access tothe sprin .contacts interposed therebetween in a simp e manner and doesnot necessitate the loss of considerable time in performing thisoperation. A. jack of the class described can be manufactured at a, verylow cost and will not consume considerable space when the same is inuse.

F rom the foregoing description of .the

construction of my improved device, it will be seen that l have provideda simple, inexpensive and ethcient means for carrying out the objects ofthe invention, and while l have particularly described the elements bestadapted to perform the functions set forth, it is obvious that variouschanges in form,

proportion, and in the m'inordetails of con struction may be resortedto, without departing from the spirit or sacrificing any of theprinciples of the invention. t

Having thus described my invention, what l claim is 'Y LA jackcomp-rising a plurality of sections of non-conducting material, saidsections having central registering openings therein, fastening meanstherefor, and spring contacts interposed between said sections andextending transversely across said openings, said fastening -meansforming bmding posts and engaging said contacts.

2. A jack comprising a plurality of sections of non-conducting material,said sections having central registering openings therein, a series ofbinding posts extending through said sections and forming fasteningmeans therefor, and a pair of spring contacts interposed between therespective sections and extending-transversely across said openings,connecting said binding posts in pairsu l 3B A jack comprising aplurality of sections of non-conducting material, said sections havingcentral registering openings therein, a series oit bindin postsextending through said sections and ,orming fastening means therefor,spring contacts interposed between said sections and extending transeachother,

versely across said openings, connectin said binding posts in pairs,said contacts eing arranged at substantially right4 angles to theintermediate portions of said sprlng contacts being adapted to beengaged by a plug when the latter is inserted in said registeringopenings.

4f. A jack comprising a plurality'of sections of non-conductingmaterial, contacts supported therebetween, means for securing saisections in alignment, said means forming binding posts, and fasteningmeans detachably associated with one of said sections for supporting thejack when in use.

jack comprising; a plurality of sectionsy of non-conducting materiaspring contacts interposed therebetween, said sections having centralregistering openings therein, a series o'bindin posts extending throughsaid sections and orming fastening; means therefor, said contactssupported in engagement with said binding posts in pairs, and a thimbleremovably associated with one of said sections for supporting the devicein position when in use.

6. A geek comprising a plurality of sections of non-conducting material,said sections having central registering openings therein, aseries ofbindin posts extending through said sections and ormingfastening meanstherefor, and spring contacts su ported between said sections and beingin engagement with pairs ci said binding posts, the intermediateportions of said contacts being disposed transversely across saidopenings. p

7. A ack comprising a plurality of sections o non-conducting materialhaving registering openings therein, transverse contact mem ersinterposed therebetween and extending across said openings, and contactposts in engagement with said transverse contacts.

8. A jack comprising a body of non-conducting material provlded with acentral opening, a transverse contact member pro-1 jecting across saidopening and a longitudinal contact member engaging said transversecontact member.,

Y In testimony whereof I aiix my signature`

